1. Heterothallism in Ascobolus carbonarius;Betts;Amer. Jour. Bot.,1926
2. The arrangement of spores for sexual strains in twenty-seven asci of Ascobolus carbonarius Karst;Betts;Amer. Jour. Bot.,1938a
3. Heterothallism in Ascobolus geophilus Seaver;Betts;Amer. Jour. Bot.,1938b
4. Further data on monosporous cultures of Gelasinospora tetrasperma;Campiseli;Bull. Torrey Bot. Club,1937
5. The life history of Ascobolus magnificus;Dodge;Mycologia,1920